A FINITE-ELEMENT MODEL FOR 3-DIMENSIONAL EDDY-CURRENT NDT PHENOMENA

被引：28

作者：

IDA, N ^{[1
]}

LORD, W ^{[1
]}

机构：

[1] COLORADO STATE UNIV, DEPT ELECT ENGN, FT COLLINS, CO 80523 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1985年 / 21卷 / 06期

关键词：

EDDY CURRENTS - Applications - MATHEMATICAL TECHNIQUES - Finite Element Method - NUCLEAR REACTORS; PRESSURIZED WATER;

D O I：

10.1109/TMAG.1985.1064207

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The defect detection mechanism for eddy current nondestructive testing (NDT) probes is related to the interaction of induced eddy currents in the metal test specimen with flaws and the coupling of these interaction effects with the moving test probe. To date, numerical modeling of these phenomena has been limited to two-dimensional and axisymmetric geometries. A three-dimensional magnetic vector potential finite element formulation for the modeling of eddy current NDT phenomena is described, and the technique is illustrated by predicting differential eddy current probe impedance plane trajectories for flaws in PWR steam generator tubing.

引用

页码：2635 / 2643

页数：9

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